线程执行时 Python GUI 没有响应 [英] Python GUI is not responding while thread is executing

问题描述

我有 Python GUI，在一个 for 循环中，我从某个 dll 调用函数，该函数返回用于逐行填充 tableWidget 的值.所有这些都工作正常，除了我无法在表格仍在填充时滚动表格(同时 dll 函数计算事物 - 每行 7-8 秒)所以我尝试使用这样的线程:

I have Python GUI, and in one for-loop I call function from some dll which returns values for populating tableWidget row by row. All this works fine, except I can't scroll table while it's still populating (while dll function calculating things - 7-8secs for each row) so I tried work with threads like this:

q = Queue.Queue()
for i in (0, numberOfRows):
    threading.Thread(target=self.callFunctionFromDLL, args=(arg1,arg2, q)).start()
    result = q.get()
    ... do something with "result" and populate table row....


def callFunctionFromDLL(self, arg1, arg2, q):
    result = self.dll.functionFromDLL(arg1, arg2)
    q.put(result)

但是直到从 q.get 传递结果之前 GUI 仍然没有响应(functionFromDLL 工作 7-8 秒，并且在 GUI 填充行时我可以滚动表格).我之前并没有真正使用过线程，因此对于如何执行此操作的任何建议或示例将不胜感激.

but still GUI is not responding until result is passed from q.get (functionFromDLL works 7-8 secs, and than for a moment while GUI populating row I can scroll table). I didn't really worked with threads before, so any suggestion or example how to do this would be appreciated.

我也试过这种方式，同样的事情，在functionFromDLL工作时gui仍然没有响应:

I've also tried this way, same thing, gui still not responding while functionFromDLL works:

for i in (0, numberOfRows):
    t = threading.Thread(target=self.callFunctionFromDLL, args=(arg1,arg2))
    t.start()
    t.join()
    result = self.result
    ... do something with "result" and populate table row....


def callFunctionFromDLL(self, arg1, arg2):
    self.result = self.dll.functionFromDLL(arg1, arg2)

推荐答案

如果您正在使用 tkinter 模块，您可能能够从 Directory Pruner 4 已实现.为了解决大多数 GUI 库不能很好地与线程配合使用的事实，该秘籍使用了代码下方列出的一些自定义模块.affinity、threadbox 和 safetkinter 模块提供了程序使用的 GUI 库的线程安全包装.

If you are using the tkinter module, you might be able to get some help from how Directory Pruner 4 is implemented. To get around the fact that most GUI libraries do not play well with threads, the recipe utilizes some custom modules listed below the code. The modules affinity, threadbox, and safetkinter provide a thread-safe wrapping of the GUI library the program uses.

这篇关于线程执行时 Python GUI 没有响应的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！